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VM_MAP_INHERIT (9) | Kernel routines | Unix Manual Pages | :man

NAME

vm_map_inherit - set fork inheritance flags for a range within a map

CONTENTS

Synopsis
Description
Implementation Notes
Return Values
See Also
Authors

SYNOPSIS


.In sys/param.h
.In vm/vm.h
.In vm/vm_map.h int
.Fo vm_map_inherit "vm_map_t map" "vm_offset_t start" "vm_offset_t end" "vm_inherit_t new_inheritance"
.Fc

DESCRIPTION

The vm_map_inherit function sets the inheritance flags for the range start to end within the target map to the value new_inheritance.

The new_inheritance flag must have one of the values VM_INHERIT_NONE, VM_INHERIT_COPY, or VM_INHERIT_SHARE. This affects how the map will be shared with child maps when the associated process forks.

IMPLEMENTATION NOTES

The vm_map_inherit function obtains a lock on the map using vm_map_lock(9) for the duration of the function.

RETURN VALUES

The vm_map_inherit function returns KERN_SUCCESS if the inheritance flags could be set. Otherwise, if the provided flags were invalid, KERN_INVALID_ARGUMENT will be returned.

SEE ALSO

fork(2)

AUTHORS


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